Fuel pump speed control by dc-dc converter
US5092302A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1990 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Dec 26, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2037/085
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control apparatus for an electric fuel pump of a motor vehicle having an internal combustion engine which receives operating fuel from the motor operated fuel pump includes a dc-dc converter connected between a power source and the fuel pump. The dc-dc converter provides power for driving the fuel pump and is responsive to a voltage demand signal for setting the voltage level of the power. In one embodiment of the invention, a voltage demand signal generator, which generates the voltage demand signal, is a zener diode for generating a fixed voltage level for the power independent of the voltage level of the storage battery. In a second embodiment, the voltage demand signal generator is a portion of an engine control circuit for generating a varying voltage level for the power which is dependent on the operating conditions of the internal combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.